9 gauge vs. 10 gauge wire

9 gauge and 10 gauge baling wire have different diameters, load strengths, and tensile strengths. We’ll discuss the importance of wire gauge and the ways these two gauges differ from one another.

Wire diameter vs. wire gauge

A wire’s diameter is inversely related to its gauge. Diameter increases as gauge decreases, and vice versa.

Wire gauge is derived from the wire manufacturing process, which involves drawing the wire through progressively smaller holes. The drawing process uses a draw plate, which is a tool with a series of conical or cylindrical holes that decrease in size.

Each pass through a hole reduces the diameter by a specific increment, and subsequently adjusts the wire’s gauge. For example, a 10 gauge wire has been drawn through 10 progressively smaller holes. This process is repeated until the desired diameter is achieved.

The American Wire Gauge (AWG) system is primarily used in North America, while the British Standard Wire Gauge (SWG) system is most commonly used in the United Kingdom and some other countries.

Wire diameter refers to a given wire’s cross sectional thickness. It is typically expressed in millimeters or inches, and provides a direct measurement of the wire’s physical size.

The diameter of a given gauge of wire may vary depending on the material and manufacturing specifications. For example, 9 gauge bright double loop bale ties in the AWG system will have a specific diameter, but the diameter may differ between copper, steel, or aluminum wires due to variations in their physical properties.

Thickness and strength

If all factors are equal, a larger diameter wire will be stronger than a smaller diameter wire (e.g. a 9 gauge wire is stronger than a 10 gauge wire).

9 gauge vs. 10 gauge wire comparison

9 gauge wire

10 gauge wire


0.148 inches

0.135 inches

Tensile strength

100,000–220,000 psi depending on wire type

65,000–220,000 psi depending on wire type

Load strength

2,040–2,150 lbs

932–1,850 lbs depending on wire type


Recycling: baling cardboard, HDPE plastic, foam, tires, textiles.

Recycling: baling plastic, cardboard, foam, aluminum, textiles.

A9 gauge wire is 0.013 inches thickerthan a comparable 10 gauge wire. 9 gauge wire is used for baling denser and more expansive materials, due to its greater load and tensile strength.

Baling wire finishes

The process of annealing improves our black annealed wire’s ductility, and the hot-dip galvanizing process adds a rust-resistant layer of zinc to our galvanized products.

Galvanized baling wire is coated in zinc during galvanization, which makes it more resistant to rust, even in wet and humid conditions. The zinc coating acts as a barrier between the steel wire and moisture in the environment, providing corrosion protection.

At Baling Wire Direct, we proudly offer Class 3 galvanization on all of our galvanized wire products, which delivers more corrosion resistance than standard Class 1 galvanization. Some of the differences between Class 1 and Class 3 galvanization include:

  • Class 1 galvanization. Our Class 1 galvanized steel wire offers a basic zinc coating that uses 0.28 ounces of zinc per square foot. Class 1 galvanized wire is more cost-effective, but will typically rust after anywhere from 2–11 years, depending on the environment. In coastal areas, Class 1 coating fails even sooner due to saltwater corrosion.
  • Class 3 galvanization. With 0.80 ounces of zinc per square foot, this premium galvanization is nearly 3 times thicker than Class 1. The robust coating is more resistant to corrosion, providing a lifespan of 13–30 years. Class 3 galvanization is better suited for harsh environments.

Annealing involves heating the steel above its recrystallization temperature, maintaining that temperature, and then cooling it. This creates a uniform atomic structure, increases ductility and flexibility, and reduces brittleness to produce a smooth wire that is durable and easy to use.

Baling wire products we offer

Baling Wire Direct sells the following high-quality baling wire products.

Baling Wire FAQ

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